As in the previous experiment, here too we had to design a digital linear phase FIR filter but using Frequency Sampling Method. In this case, we use the frequency domain analysis where the magnitude and phase of the filter are found from H(k), and then using inverse DFT, h(n) is found.
The software used was Scilab. Filter parameters like order, cut-off frequency were entered by us and the magnitude spectrum so obtained was used for comparing the stop band and pass band attenuation values with their corresponding calculated values.
FSM is the simplest method for FIR filter design
ReplyDeleteIs FSM computationally more efficient?
ReplyDeleteyes it is
DeleteWhat happens when no. of frequency samples increases?
ReplyDeleteresolution increases, error decreases
DeleteThis method is good for narrow band filters
ReplyDeleteWhat happens when no. of frequency samples increases?
ReplyDeleteerror reduces, resolution increases
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ReplyDeleteFSM is faster and simple
ReplyDelete